JP4523161B2 - Door check - Google Patents

Abstract

A door closer with an oblong, one-piece body such to achieve a compact and aesthetic unit which can be produced with a minimum material consumption. The door closer has lateral faces which each have a curvature and/or bevel that shapes towards each other, which curvature or bevel starts at the lower surface and ends at the upper surface of the door closer. The door closer also has bearing blocks that are built between their fronts and the lateral faces ascending from the body's lower surface.

Description

[0001]
The invention starts from a door check based on the superordinate concept of claim 1.
[0002]
This type of door ticks is known by the designation “DORMA TS77” and is actually highly valued for its reliability and versatility. The door tic can be attached to the inside or outside of the door and also to the door frame. The placement of the door ticks inside the door is fundamentally a problem because the door moves towards the adjacent wall when opened, and then the door check is located between the door and the wall. In short, if the door opening angle is too large, there is a risk that the door check will collide with the adjacent wall and be damaged, especially if the door is built into a corner or a thin wall of the room. In such a use example, the opening angle is limited. Therefore, there is a need for a compact door check that has a very low overall height while maintaining the versatility of use and various functions.
[0003]
The outer dimensions of known door checks, in particular the overall height, are extremely high due to the special internal structure, so that corresponding packaging materials are required for the packaging of the door checks, and further corresponding storage and transport spaces are available. It must be. The angular outer shape of the door check causes a manufacturing technical problem due to the material cavity and is disadvantageous from the viewpoint of economical material use.
[0004]
It is an object of the present invention to improve the door check according to the superordinate concept of claim 1 so that a compact and pleasing unit is produced that can be produced with minimal material and production costs.
[0005]
This problem is solved by the features described in the characterizing part of claim 1. Another advantageous configuration of the invention is described in claims 2 and below.
[0006]
The subject matter of claim 1 has the advantage that a slight overall height can be realized by the compact outer shape of the door check. Moreover, the door check is also suitable for use in installation situations that are narrow or inconvenient with respect to the restricted opening angle of the door. In this case, preference is given to a door check of the type in which the mechanical and hydraulic units are arranged longitudinally in the corresponding passages of the body.
[0007]
Despite very little material requirements for the body according to the invention, stability and all functionality are guaranteed. All wall thicknesses are reduced to a minimum. The resulting outer contour is aesthetically pleasing with a smooth and seamless transition. The body is formed vertically by the serial arrangement of the functional units, in which case the side faces conform to the contour of the passage. In that case, a curved or inclined extension of the side is ideal. The smooth extension of the outer contour, in particular the extension of the side faces and the bearing blocks described below, significantly reduces material use and reduces casting technical problems.
[0008]
In order to sufficiently stabilize the exit portion of the drive shaft, the side surface has a block-shaped solid reinforcing portion, and the reinforcing portion itself is formed in a material-saving manner. It is particularly advantageous if this so-called bearing block is connected to the underside of the body. The drive shaft is arranged so that various mounting positions of the door check can be realized. Furthermore, the shaft is supported and fixed in a suitable shaft hole, which is very material-saving and easy to assemble.
[0009]
The reduction in outer dimensions reduces the amount of packaging material required and reduces storage and transport space. The reduction in volume and weight increases the packaging density during transport and further simplifies handling in terms of on-site mounting power. The aforementioned characteristics further contribute to a reduction in production costs.
[0010]
Next, the present invention will be described by way of example with reference to the drawings.
[0011]
In the drawings, the same components or components that act in the same way are designated by the same reference numerals. The door check (Tuerschliesser) 1 shown in the drawing is manufactured in one piece by a casting process and is made of, for example, aluminum or steel. Despite the optimization aspect of sufficient body stability and minimal material use, a solid body 2 has not occurred. Basically, all outer contours and surface transitions are rounded.
[0012]
The door check 1 is equipped for receiving mechanical and hydraulic functional units, respectively, which are arranged in the passage 21 in the longitudinal direction of the body 2 in a known manner for the purpose of reducing the overall height. ing. A shaft 22 connects the mechanical unit in the body 2 to a connecting rod outside the body. The shaft 22 is derived from the body 2 on both sides so that the arrangement of the door check 1 and the connecting rod can be variably handled depending on the mounting conditions in relation to the door and door frame. The connecting rod is not shown for easy viewing of the drawing.
[0013]
In the vertically long body 2, the piston 23 and the closing spring 24 are slidably connected to each other. The shaft 22 is rotatably supported in the body 2 and is provided with a gear 25 at the center. The gear 22 cooperates with a rack 26 integrally formed in the piston 23. The shaft 22 is connected to a connecting rod (not shown) outside the body 2.
[0014]
When the door is opened, the shaft 22 is rotated via a connecting rod connected to the door. The piston 23 moves in the horizontal direction and compresses the closing spring. As soon as the door is released, the stored opening energy is released again by the tight relaxation of the closing spring 24, whereby the piston 23 is pressed in the opposite direction. The door is closed again by conversion from linear motion to rotational motion. Hydraulic oil is present in the body 2 as a buffer medium.
[0015]
The body 2 has a shaft hole 27 oriented in the axial direction for supporting and fixing the shaft 22. The shaft hole 27 has a round cross section. In FIG. 5, the upper portion of the shaft hole 27 has an edge 28 with a reduced cross section. A lower portion of the shaft hole 27 has a groove 29 for the seal ring 30. The shaft 22 is formed symmetrically and has a gear 25 at the center. Washers 31 are attached to both sides of the gear 25 in advance. Devices for fixing the connecting rod are formed at both ends of the shaft 22. The connecting rod is attached to a suitable end depending on the installation situation. So-called sintered bushes 32 and 37 made of ceramic disposed on both sides of the shaft 22 serve as support portions. The tubular bearing shell 33 has a stepped cross section that terminates at an edge edge 34. The outer surface of the bearing shell 33 is formed to expand in the radial direction at least in a region.
[0016]
Next, assembly of the door check 1 will be described. The bearing shell 33 forms a pre-assembled unit, in which the ring seal 35 is first fitted onto the edge edge 34 and then the sintered bush 32 is pressed against the ring seal 35 so as not to be dissociated. A ring seal 36 and then a sintered bush 37 are fixed in the upper part of the shaft hole 27 so as not to be dissociated. A seal 30 is inserted into the groove 29 in the lower part of the shaft hole 27. After inserting the closing spring 24 and the piston 23 into the passage 21, the shaft 22 is inserted through the lower part of the shaft hole 27. The shaft 22 slides inside the upper part of the shaft hole 27 through the sintered bush 37 fixed therein until the sintered bush hits the passage 21 by the washer 31. Complete support and fixing of the shaft 22 is effected by inserting a bearing shell 33 in the lower part of the shaft hole 27. The pre-assembled bearing shell 33 is pressed onto the shaft 22 and finally positioned in the body 2 and on the shaft 22 with a defined pressure. Initially, the sintered bush 32 slides on the shaft 22, and the outer surface of the bearing shell 33 slides along the inner wall of the shaft hole 27. The body 2 surrounding the shaft hole 27 is elastically pressed outward by a bearing shell 33 which is preferably enlarged in a region by a projection. After passing through the groove 29, the protrusion is locked in the groove 29 by the spring elastic return of the body 2, and the bearing shell 33 is fixed. At the same time, the shaft 22 is positioned in the axial direction by the contact of the sintered bush 32 with the washer 31.
[0017]
The body 2 is formed vertically in principle. The body 2 has an upper surface 3 on the side opposite to the lower side 4. On the lower side 4 are formed mounting plates 9, 10 which serve to fix the body 2 to the door or door frame in a longitudinal extension. The lower side 4 and the upper side 3 are joined by side surfaces 5 and 6 within a longitudinal extension. End faces 7 and 8 are arranged perpendicular to the side faces 5 and 6, the lower side 4 and the upper face 3, and the end faces restrict the body 2 with respect to the longitudinal extension. The mounting plates 9 and 10 protrude from the body 2 at the end surfaces 7 and 8.
[0018]
The embodiment according to FIGS. 1 to 3 has the following characteristics. The side surfaces 5 and 6 are curved and extend toward the inside of the body 2 starting from the lower side 4 and end at the upper surface 3. The curvature has a parabolic extension, in which case the upper surface 3 limits this extension. The transition between the side surfaces 5, 6 and the upper surface 3 is formed by a small radius.
[0019]
The shaft is arranged in the center between the upper surface 3 and the lower side 4 and deviated from the center between the end surfaces 7, 8. This arrangement of the shaft 22 allows various, for example mirror-symmetric mounting variations of the door check 1. The shaft 22 projects from the body 2 at the bearing blocks 11, 12 on both sides 5, 6. The bearing blocks 11 and 12 are solid and are formed integrally with the body 2 in order to ensure stable shaft support. Each of the bearing blocks 11, 12 has a trapezoidal front surface 13, 14 extending perpendicularly to the lower side 4, in which case the wide bases 15, 16 are on the lower side 4. The trapezoidal cross section of the bearing blocks 11, 12 continues from the front surfaces 13, 14 to the side surfaces 5, 6 with a slight increase. The bearing blocks 11, 12 are dimensioned so that they do not protrude beyond the upper surface 3.
[0020]
FIG. 6 and FIG. 7 show the body 2 whose side surfaces 5 and 6 similarly extend in a parabolic shape. The upper surface 3 is slightly curved towards the outside of the body 2 so that casting material is saved. The transition between the side surfaces 5, 6 and the upper surface 3 is likewise formed with a small radius. The bearing blocks 11, 12 have U-shaped front surfaces 13, 14, in which case the open sides 17, 18 are on the lower side 4. The U-shaped cross section of the bearing blocks 11 and 12 is slightly increased in the direction of the side surfaces 5 and 6. The mounting plates 9 and 10 are beveled for reasons of material saving.
[0021]
8 and 9 show the body 2 whose side surfaces 5 and 6 have different curvatures. The side surface 5 extends in a parabolic manner as already described in the same way as the embodiment according to FIGS. 1 to 3 and borders the flat upper surface 3. The side surface 6 has a different parabolic extension with respect to the side surface 5, this extension being characterized by the side surface 6 terminating in the upper surface 3 without a transition. The upper surface 3 is essentially formed flat on one side and curved on one side.
[0022]
The point common to the three embodiments is that they have two holes 19, 20 on the lower side 4, as can be seen from FIG. These holes 19, 20 serve to position and secure the workpiece at another work place during fabrication after the casting process. This prevents errors in the orientation of the workpiece, especially in mechanical production.
[Brief description of the drawings]
FIG. 1 is a perspective view of a door check.
FIG. 2 is an end view of the door check according to FIG.
3 is a view of the door check according to FIG. 1 as viewed from below.
4 is a vertical longitudinal sectional view of the door check according to FIG. 1;
FIG. 5 is a horizontal longitudinal sectional view of the door check according to FIG. 1;
FIG. 6 is a perspective view of a second embodiment of a door check.
7 is an end view of the door check according to FIG. 4;
FIG. 8 is a perspective view of a third embodiment of a door check.
9 is an end view of the door check according to FIG. 6;
[Explanation of symbols]
1 Door check, 2 body, 3 upper surface, 4 lower side, 5 side surface, 6 side surface, 7 end surface, 8 end surface, 9 mounting plate, 10 mounting plate, 11 bearing block, 12 bearing block, 13 front surface, 14 front Surface, 15 base, 16 base, 17 open side, 18 open side, 19 holes, 20 holes, 21 passages, 22 shafts, 23 pistons, 24 closing springs, 25 gears, 26 racks, 27 shaft holes, 28 edges, 29 groove, 30 seal, 31 washer, 32 sintered bush, 33 bearing shell, 34 edge, 35 ring seal, 36 ring seal, 37 sintered bush

Claims (8)

A door check (1) with a vertically long body (2) formed integrally,
The body (2) has two upper surfaces (3) arranged parallel to one lower side (4), and the two (4) and the upper surface (3) joined together. and side surfaces (5, 6) located on the opposite side, it has a body two end surfaces for limiting the (2) in the longitudinal direction with respect to extending (7,8),
Body (2) has a mounting plate (9, 10) which projects from the end face (7, 8) in the longitudinal direction on the lower side (4),
The shaft (22) is rotatably supported on both side surfaces (5, 6) and can be connected to a connecting rod connected to the door,
The side surfaces (5, 6) extend from the lower side (4) starting from the lower side (4) and ending with the upper surface (3) so as to be curved and / or inclined to approach each other and the axis (22) Arranged in the bearing block (11, 12) in the middle between the side (4) and the upper surface (3),
The bearing block (11, 12) is solid and integrally formed on the body (2), and the front surface (13, 14) of the bearing block (11, 12) extends vertically from the lower side (4). In the type in which the bearing block (11, 12) is formed between the front surface (13, 14) and the side surface (5, 6) ,
The shaft (22) is rotatably supported in the bearing shell (33) on one side, and the bearing shell (33) provided with a protrusion is connected to the shaft hole (27) provided in the body (2). When inserted, the protrusion (2) is elastically pressed outward by the protrusion, and can be locked in the groove (29) provided in the shaft hole (27) after the spring elastic return of the body,
The shaft hole (27) has two different diameters, the shaft (22) is provided with a gear (25) in the center, and the diameter of the gear (25) is equal to that of the shaft hole (27). A door check characterized by being larger than the smaller diameter and smaller than the larger diameter .   2. The door check according to claim 1, wherein the side surfaces (5, 6) extend differently from each other in an inclined and / or curved manner.   The door check according to claim 1 or 2, wherein the side surfaces (5, 6) extend in a parabolic shape.   4. The door check according to claim 1, wherein the upper surface extends at least partially curved. The door check according to any one of claims 1 to 4 , wherein the front surface (13, 14) is formed in a trapezoidal shape or a U-shape. The door check according to any one of claims 1 to 5 , wherein the bearing block (11, 12) does not protrude beyond the upper side (3). The lower (4), holes serve for positioning and fixing at the time of manufacture after casting process (19, 20) are opened, the door check according to any one of claims 1 to 6. Body (2) it is, have a hollow structure and is casting material or al made operation, door check according to any one of claims 1 to 7.

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